JIC
MGNI icon

Johnson Investment Counsel’s Magnite MGNI Stock Holding History

Johnson Investment Counsel’s Portfolio MGNI Stock Details MGNI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q3 		– Sell
-20,208
Closed -$487K – 856
2025
Q2 		$487K Buy
20,208
+5,299
+36% +$78.1K ﹤0.01% 554
2025
Q1 		$170K Sell
14,909
-7,059
-32% -$113K ﹤0.01% 772
2024
Q4 		$350K Sell
21,968
-1,103
-5% -$16.2K ﹤0.01% 607
2024
Q3 		$320K Sell
23,071
-4,154
-15% -$56.6K ﹤0.01% 612
2024
Q2 		$362K Sell
27,225
-42
-0.2% -$459 ﹤0.01% 554
2024
Q1 		$293K Sell
27,267
-516
-2% -$5.16K ﹤0.01% 615
2023
Q4 		$259K Buy
27,783
+293
+1% +$2.31K ﹤0.01% 617
2023
Q3 		$207K Buy
+27,490
New +$296K ﹤0.01% 629

Other funds holding MGNI

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
GIM
Granahan Investment Management Waltham, Massachusetts $2.07B AUM 56.45% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Johnson Investment Counsel's MGNI Position: Q3 2025 in Review

Johnson Investment Counsel sold out of Magnite (MGNI) in Q3 2025, closing a stake of 20,208 shares — an estimated $487K sold.

Johnson Investment Counsel first reported a position in MGNI in Q3 2023 and held it in 8 quarters. The position peaked at $487K in Q2 2025. 316 funds tracked by Wall St. Rank hold MGNI as of Q3 2025.

  • Johnson Investment Counsel reported no remaining Magnite position as of Q3 2025 after selling out during the quarter.
  • Johnson Investment Counsel sold 20,208 Magnite shares in Q3 2025, an estimated $487K.
  • Johnson Investment Counsel first reported a position in Magnite in Q3 2023 and held it in 8 quarters.
  • Johnson Investment Counsel's Magnite position peaked at $487K in Q2 2025.
  • 316 funds tracked by Wall St. Rank held Magnite as of Q3 2025.

Based on Johnson Investment Counsel's 13F filing for Q3 2025, filed 6 Nov 2025.